I downloaded Kodi 18 Alpha 1 from the Kodi website but you have to look for "apks" file. Download the Apks file, unzip it and then load it on your Android but this may or may not load on your device as you may think you own your android device but Google, Nvidia or some other faceless interloper may have first dibs on who really owns your android box. If it won't load, its safe to assume there is something going on that prevents it from being loaded and it may well be Kodi preventing it from being loaded on your android device. I was able to load it on my Nvidia Shield Tv 16gb box but I had to uninstall the kodi version that was preinstalled on it first. I would strongly suggest doing a factory default on your android box, uninstall kodi and then try and load kodi 18 BEFORE you load any emulators. This may work, might not.